Abstract: A system for detecting three-dimensional (3D) part drag includes an infrared image capture device to capture a plurality of thermal images of a 3D part build region of a 3D printing device on which a part is built, and an image analysis module to detect drag of the part based on a difference image produced by subtracting a first thermal image from a second thermal image.

Abstract: According to examples, an apparatus may include a fabricating system, a processor, and on memory on which are stored machine readable instructions. The instructions, when executed by the processor, may cause the processor to control the fabricating system to spread a first layer of build material as part of an object fabrication process, the build material comprising particles or a paste. The instructions may also cause the processor to control the fabricating system to selectively solidify a first area of the layer to a higher degree of solidification than a predefined second area encompassed by the first area, in which the predefined second area has a lower fracture toughness than the first area to propagate a crack in the object more readily than the first area.

Abstract: A spherical identifier may, in an example, include a sphere including a plurality of shells forming the sphere, a radially-defined code being discernable using the arrangement of the plurality of shells. A three-dimensional object identifier may, in an example, include a number of spheres manufactured into the body of the three-dimensional object wherein each of the spheres comprise a plurality of shells; the shells constituting a radially definable code.

Abstract: A control and feedback technique to determine the proper location of powder control temperature regions includes detecting solid parts having specified shape and thermal characteristics. The solid parts are generated by a 3D printer. The solid parts include powder material fused on a layer by layer basis. A powder control temperature region is selected in each layer of powder material, wherein the region is located in unfused powder material adjacent to the solid parts, and wherein the region is selected based on characteristics of the shape of a build area and thermal imaging associated with any of a structural formation of the solid parts adjacent to the region, and an amount of thermal energy radiated by the solid parts adjacent to the region. The amount of thermal energy to cause fusing of the powder material on each subsequent layer is modified based on location of the powder control temperature region.

Abstract: In an example implementation, a method of producing a diffusion-controlled release device includes accessing diffusion-controlled release input data, and translating the input data into a diffusion-controlled release print file. The method includes executing the diffusion-controlled release print file to control a 3D printing system to produce a diffusion-controlled release device that comprises an active ingredient release profile based on the diffusion-controlled release input data.

Abstract: In some examples, a request to print a first three-dimensional (3D) part is received. In response to determining that the first 3D part is not similar to any 3D part referred to by an information base, a representation of the first 3D part is extracted, an indication to conduct an operation to produce a design rule for the first 3D part is sent. In response to determining that the first 3D part is similar to a matching 3D part referred to by the information base, a design rule for the matching 3D part is retrieved to print the first 3D part, where the design rule for the matching 3D part specifies a dependency of a property of the matching 3D part on an aspect associated with printing the matching 3D part.

Abstract: In an example, a method is described that includes generating a model for fabricating an object via an additive manufacturing process. The model includes a first region defining the object and a second region defining a sacrificial artifact. The object is fabricated via the additive manufacturing process, using a fusing printing fluid.

Abstract: An example device includes at least one three-dimensional (3D) printed tablet and a 3D-printed production support structure. Each 3D-printed tablet includes an excipient material and an active ingredient. The 3D-printed support structure includes a 3D-printed planar structure comprising the excipient material and at least one 3D-printed connecting member comprising the excipient material. The planar structure includes at least one aperture, each aperture corresponding to one of the at least one 3D-printed tablet. The connecting member detachably connects the at least one 3D-printed tablet with the 3D-printed planar structure and positions the at least one 3D-printed tablets within the apertures.

Abstract: In an example implementation, a method of producing an ingredient delivery device includes applying a layer of powder within a work space, selectively depositing a liquid active ingredient onto the powder layer where the liquid active ingredient is to function as a fusing agent, and applying fusing energy to the powder layer to control a release profile of the active ingredient upon ingestion of the ingredient delivery device by a user.

Abstract: Three dimensional (3D) printed molds having breakaway features are disclosed. An example method for forming a mold having a cavity by creating a plurality of layers using an additive manufacturing process includes providing a build material and varying a fusion level applied to the build material to form a first fused area and a second fused area on a layer of the mold, the second fused area is to define a breakaway feature of the mold.

Abstract: In an example implementation, a method of producing an erosion-controlled release device includes accessing erosion-controlled release input data, and translating the input data into an erosion-controlled release print file. The method includes executing the erosion-controlled release print file to control a 3D printing system to produce an erosion-controlled release device that comprises an active ingredient release profile based on the erosion-controlled release input data.

Abstract: An example system includes a three-dimensional (3D) printer to produce a 3D working product. The 3D working product includes cured material forming a printed portion of a 3D object and uncured material, and the printed portion of the 3D object is at least partly embedded in the uncured material. The example system further includes a controller to generate a virtualized image of at least a part of the 3D object and a display coupled to the controller, the display to display a virtualized environment, the virtualized environment including the virtualized image of the 3D object, the virtualized image of the 3D object corresponding to at least a part of the printed portion of the 3D object.

Abstract: An example system includes an array of nozzles to deposit a print material for printing a three-dimensional object, a thermal sensor to determine a thermal characteristic at multiple locations of the print material, and a controller. The controller includes a gradient identification portion to identify a location on the print material having a gradient of the thermal characteristic being greater than a predetermined threshold. The controller further includes a nozzle identification portion to identify a nozzle associated with the identified location as an anomalous nozzle.

Abstract: According to examples, a three-dimensional (3D) fabrication system may include a controller to identify a feature of an object to be fabricated and based on the identified feature having a size that is smaller than a predefined size, determine a thermal support for the identified feature. The controller may also control fabrication components to form, through application of energy, the determined thermal support from a first set of particles, form an intermediate section adjacent to the formed thermal support from a second set of particles, and form, through application of energy, the feature adjacent to the intermediate section from a third set of particles, in which heat from the thermal support is to reduce a thermal bleed rate of the third set of particles.

Abstract: According to an example, a three-dimensional (3D) printed object may include a body formed of an electrically non-conductive material. In addition, an electrically conductive channel, a sensing device, and a signal emitter may be embedded within the body. The sensing device may be in electrical communication with the electrically conductive channel such that the sensing device is affected by a disruption in a current applied through the electrically conductive channel. In addition, the signal emitter may emit a wireless signal in response to the sensing device being affected by a disruption in the applied current.

Abstract: Examples disclosed herein relate to determining data usage effectiveness. A processor may determine data usage effectiveness information related to an entity's workflow based on workflow data collected related to the entity's operations and metrics determined based on the data. The determination may be based on a comparison of the information related to the entity's workflow to target workflow information and priority information associated with the target workflow information. The processor may output information related to the determined data usage effectiveness.

Abstract: Examples disclosed herein relate to determining a manufacturing batch. In one implementation, the manufacturing batch relates to 3D printing. A processor may determine component parts of a product that. In one implementation, a processor determines a batch of the component parts related to different products based on a comparison to other potential batches.

Abstract: A method is disclosed in which an identifier is to be printed on a surface of a part to be additive manufactured. The identifier is utilized during post-processing of the part at the manufacturing facility, then the identifier is modified so as to no longer be visible before leaving the facility.

Abstract: According to examples, an apparatus may include a memory on which is stored instructions that may cause a processor to receive an intended release profile for a drug, the intended release profile including a certain release rate of the drug over time following ingestion of the drug. The instructions may also cause the processor to determine a group of release modules that contain the drug, the determined group of release modules having release profiles for the drug that together meet or approximate the intended release profile for delivery of the drug, and at least two of the release modules in the group having different release profiles for the with respect to each other.

Abstract: A spherical identifier may, in an example, include a sphere including a plurality of shells forming the sphere, a radially-defined code being discernable using the arrangement of the plurality of shells. A three-dimensional object identifier may, in an example, include a number of spheres manufactured into the body of the three-dimensional object wherein each of the spheres comprise a plurality of shells; the shells constituting a radially definable code.